You are being ironic, I presume. When near everyone who matters in SV / IT / tech is a user on your platform, I gather there is something of interest in the data trail they leave behind.
Ah. Yes, sure, I very much share that opinion. Its done everywhere nevertheless.
I don't know the people at YC (other than dang from his comments.. a great mod) and their moral/ethical stance. But they are in the business of trying to raise unicorns though, with potential multi-billion valuation.